← single night · whole-night plan
Which nights are best for a target over the coming weeks. The astronomy mark (darkness × altitude × Moon) is computed for every night; the weather and the overall mark exist only where Open-Meteo has a forecast (the next four days) or ERA5 history (past nights) — the rest is honestly blank.
| night of | astronomy | weather | overall | best window | highest | dark h | Moon | Moon sep. |
|---|---|---|---|---|---|---|---|---|
| 2030-01-29 Tue | 1 | — | unknown | — | 71.1° 11:45 | 10.85 | 17% | 59.8° |
| 2030-01-30 Wed | 1 | — | unknown | — | 71.1° 11:40 | 10.82 | 9% | 50.6° |
| 2030-01-31 Thu | 1 | — | unknown | — | 71.1° 11:35 | 10.79 | 4% | 43.4° |
| 2030-02-01 Fri | 1 | — | unknown | — | 71.1° 11:35 | 10.76 | 1% | 39.2° |
| 2030-02-02 Sat | 1 | — | unknown | 06:25–06:30 (marginal, 0.08 h) | 71.1° 11:30 | 10.72 | 0% | 38.9° |
| 2030-02-03 Sun | 2 | — | unknown | 05:55–06:00 (marginal, 0.08 h) | 71.1° 11:25 | 10.69 | 2% | 42.3° |
| 2030-02-04 Mon | 3 | — | unknown | 06:20–06:30 (marginal, 0.17 h) | 71.1° 11:20 | 10.65 | 6% | 48.5° |
| 2030-02-05 Tue | 3 | — | unknown | 06:15–06:30 (marginal, 0.25 h) | 71.1° 11:15 | 10.62 | 12% | 56.4° |
| 2030-02-06 Wed | 3 | — | unknown | 06:10–06:25 (marginal, 0.25 h) | 71.1° 11:15 | 10.58 | 19% | 65.1° |
| 2030-02-07 Thu | 4 | — | unknown | 05:40–05:55 (marginal, 0.25 h) | 71.1° 11:10 | 10.55 | 27% | 74.1° |
| 2030-02-08 Fri | 5 | — | unknown | 05:35–05:55 (marginal, 0.33 h) | 71.1° 11:05 | 10.51 | 36% | 83.4° |
| 2030-02-09 Sat | 5 | — | unknown | 06:00–06:25 (marginal, 0.42 h) | 71.1° 11:00 | 10.48 | 45% | 92.7° |
| 2030-02-10 Sun | 6 | — | unknown | 05:55–06:25 (marginal, 0.5 h) | 71.1° 10:55 | 10.44 | 54% | 101.9° |
| 2030-02-11 Mon | 6 | — | unknown | 05:25–06:20 (marginal, 0.92 h) | 71.1° 10:55 | 10.4 | 64% | 110.9° |
| 2030-02-12 Tue | 8 | — | unknown | 05:20–06:20 (marginal, 1.0 h) | 71.1° 10:50 | 10.36 | 72% | 119.6° |
| 2030-02-13 Wed | 8 | — | unknown | 05:15–06:20 (marginal, 1.08 h) | 71.1° 10:45 | 10.32 | 81% | 127.7° |
| 2030-02-14 Thu | 8 | — | unknown | 05:40–05:45 (good, 0.08 h) | 71.1° 10:40 | 10.28 | 88% | 134.7° |
| 2030-02-15 Fri | 8 | — | unknown | 05:10–06:15 (marginal, 1.08 h) | 71.1° 10:40 | 10.24 | 94% | 139.7° |
| 2030-02-16 Sat | 9 | — | unknown | 05:40–05:45 (good, 0.08 h) | 71.1° 10:35 | 10.2 | 98% | 141.5° |
| 2030-02-17 Sun | 9 | — | unknown | 05:35–05:40 (good, 0.08 h) | 71.1° 10:30 | 10.16 | 100% | 139.5° |
| 2030-02-18 Mon | 10 | — | unknown | 05:35–05:40 (good, 0.08 h) | 71.1° 10:25 | 10.12 | 99% | 134.0° |
| 2030-02-19 Tue | 10 | — | unknown | 05:30–05:40 (good, 0.17 h) | 71.1° 10:20 | 10.08 | 96% | 125.9° |
| 2030-02-20 Wed | 11 | — | unknown | 05:30–05:40 (good, 0.17 h) | 71.1° 10:20 | 10.04 | 91% | 116.1° |
| 2030-02-21 Thu | 10 | — | unknown | 05:30–05:35 (good, 0.08 h) | 71.1° 10:15 | 10.0 | 83% | 105.5° |
| 2030-02-22 Fri | 11 | — | unknown | 05:25–05:35 (good, 0.17 h) | 71.1° 10:10 | 9.95 | 74% | 94.4° |
| 2030-02-23 Sat | 11 | — | unknown | 05:25–05:35 (good, 0.17 h) | 71.1° 10:05 | 9.91 | 63% | 83.3° |
| 2030-02-24 Sun | 12 | — | unknown | 05:20–05:30 (good, 0.17 h) | 71.1° 10:00 | 9.87 | 52% | 72.3° |
| 2030-02-25 Mon | 13 | — | unknown | 05:10–05:30 (good, 0.33 h) | 71.1° 10:00 | 9.82 | 40% | 62.0° |
| 2030-02-26 Tue | 15 | — | unknown | 05:05–05:30 (good, 0.42 h) | 71.1° 09:55 | 9.78 | 30% | 52.7° |
| 2030-02-27 Wed | 18 | — | unknown | 04:55–05:30 (good, 0.58 h) | 71.1° 09:50 | 9.74 | 20% | 45.0° |
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&date=2030-01-29&days=30"
curl -sS "https://devops.majbase.com/rozhen-planner/calendar-api?target=M31&days=30&format=csv" -o m31-calendar.csvOne row per night: score_astronomy always, score_weather / score only where a forecast or history exists (null otherwise, with weather_source saying which), best window, dark hours, Moon illumination and separation, transit. 7–60 nights. Errors: 400 with invalid_date or target_unresolved. Results are cached for six hours; calculation version 2026-10-10.1.